<template>
  <div>
    <el-dialog
      :title="dialogInfo.isAdd ? '添加商品管理' : '编辑商品管理'"
      :visible.sync="dialogInfo.isShow"
      :before-close="cancel"
      center
      @opened="createEditor"
    >
      <el-form :model="goodsInfo" :rules="rules" ref="goodsInfo">
        <el-form-item
          label="一级分类"
          :label-width="formLabelWidth"
          prop="first_cateid"
        >
          <el-select
            @change="changeCate(false)"
            v-model="goodsInfo.first_cateid"
            placeholder="请选择"
          >
            <el-option
              v-for="item in cateList"
              :key="item.id"
              :label="item.catename"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item
          label="二级分类"
          :label-width="formLabelWidth"
          prop="second_cateid"
        >
          <el-select v-model="goodsInfo.second_cateid" placeholder="请选择">
            <el-option
              v-for="item in secondCate"
              :key="item.id"
              :label="item.catename"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item
          label="商品名称"
          :label-width="formLabelWidth"
          prop="goodsname"
        >
          <el-input v-model="goodsInfo.goodsname" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item
          label="商品价格"
          :label-width="formLabelWidth"
          prop="price"
        >
          <el-input v-model="goodsInfo.price" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item
          label="市场价格"
          :label-width="formLabelWidth"
          prop="market_price"
        >
          <el-input
            v-model="goodsInfo.market_price"
            autocomplete="off"
          ></el-input>
        </el-form-item>
        <el-form-item label="图片" :label-width="formLabelWidth">
          <el-upload
            action="#"
            list-type="picture-card"
            :on-preview="onPreview"
            :on-remove="handleRemove"
            :auto-upload="false"
            :on-change="onChange"
            :file-list="fileList"
            :limit="1"
            :on-exceed="onExceed"
          >
            <i class="el-icon-plus"></i>
          </el-upload>
          <el-dialog :visible.sync="dialogVisible">
            <img width="100%" :src="dialogImageUrl" alt="" />
          </el-dialog>
        </el-form-item>
        <el-form-item
          label="商品规格"
          :label-width="formLabelWidth"
          prop="specsid"
        >
          <el-select
            @change="changeSpecs(false)"
            v-model="goodsInfo.specsid"
            placeholder="请选择"
          >
            <el-option
              v-for="item in specsList"
              :key="item.id"
              :label="item.specsname"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item
          label="规格属性"
          :label-width="formLabelWidth"
          prop="specsattr"
        >
          <!-- multiple	是否多选 -->
          <el-select
            v-model="goodsInfo.specsattr"
            placeholder="请选择"
            multiple
          >
            <el-option
              v-for="item in specsArr"
              :key="item"
              :label="item"
              :value="item"
            >
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="是否新品" :label-width="formLabelWidth">
          <el-radio v-model="goodsInfo.isnew" :label="1">是</el-radio>
          <el-radio v-model="goodsInfo.isnew" :label="2">否</el-radio>
        </el-form-item>
        <el-form-item label="是否热卖" :label-width="formLabelWidth">
          <el-radio v-model="goodsInfo.ishot" :label="1">是</el-radio>
          <el-radio v-model="goodsInfo.ishot" :label="2">否</el-radio>
        </el-form-item>
        <el-form-item label="商品描述" :label-width="formLabelWidth">
          <div id="wangEditor"></div>
        </el-form-item>
        <el-form-item label="状态" :label-width="formLabelWidth">
          <el-switch
            v-model="goodsInfo.status"
            active-color="#13ce66"
            inactive-color="#ff4949"
            :active-value="1"
            :inactive-value="2"
          >
          </el-switch>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="cancel">取 消</el-button>
        <el-button v-if="dialogInfo.isAdd" type="primary" @click="addGoods"
          >添 加</el-button
        >
        <el-button v-else type="primary" @click="editGoods">编 辑</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
//引入封装好的接口
import { getGoodsAdd, getGoodsInfo, getGoodsEdit } from "../../util/axios";
import { mapActions, mapGetters } from "vuex";
//引入富文本编辑器
import E from "wangeditor";
export default {
  data() {
    return {
      goodsInfo: {
        first_cateid: "", //一级分类编号
        second_cateid: "", //二级分类编号
        goodsname: "", //商品名称
        price: "", //商品价格
        market_price: "", //市场价格
        img: "", //商品图片（文件）
        description: "", //商品描述
        specsid: "", //商品规格编号
        specsattr: "", //商品规格属性
        isnew: 1, //是否新品1是2不是
        ishot: 1, //是否热卖1是2不是
        status: 1, //状态1正常2禁用
      },
      editor: null,
      //创建一个二级分类数组
      secondCate: [],
      //创建一个规格属性数组
      specsArr: [],
      formLabelWidth: "120px", //label宽度
      //dialogVisible 用于控制图片预览的显示隐藏
      dialogVisible: false,
      //预览时调用的图片地址
      dialogImageUrl: "",
      imgUrl: "", //设置图片地址用于接收所有上传文件详情
      fileList: [], //用于图片回显
      //规则验证
      rules: {
        goodsname: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
          {
            min: 2,
            max: 15,
            message: "长度在 2 到 15 个字符",
            trigger: "blur",
          },
        ],
        price: [{ required: true, message: "请输入商品价格", trigger: "blur" }],
        market_price: [
          { required: true, message: "请输入市场价格", trigger: "blur" },
        ],
        first_cateid: [
          { required: true, message: "请选择一级分类", trigger: "change" },
        ],
        second_cateid: [
          { required: true, message: "请选择二级分类", trigger: "blur" },
        ],
        specsid: [
          { required: true, message: "请选择商品规格", trigger: "change" },
        ],
        specsattr: [
          { required: true, message: "请选择规格属性", trigger: "blur" },
        ],
      },
    };
  },
  props: ["dialogInfo"],
  computed: {
    ...mapGetters({
      cateList: "cate/getCateList",
      specsList: "specs/getSpecsList",
    }),
  },
  mounted() {
    //组件加载调用分类列表
    this.getCateList();
    this.getSpecsList();
  },
  methods: {
    //封装一个创建富文本编辑器的方法a
    createEditor() {
      //组件一加载就获取wangEditor 实例化之后得到了它配置对象上的所有属性和方法
      this.editor = new E("#wangEditor");
      //调用create方法
      this.editor.create();
      //每次创建都把上一次的值清空
      //this.goodsInfo.description 初始值空
      this.editor.txt.html(this.goodsInfo.description);
    },
    //文件限制方法
    onExceed(files, fileList) {
      this.$message.warning(
        `当前限制选择 1 个文件，本次选择了 ${files.length} 个文件，共选择了 ${
          files.length + fileList.length
        } 个文件`
      );
    },
    //预览的回调函数
    onPreview(file) {
      console.log(file, "文件");
      //得到文件地址之后，把它赋值给要显示的属性
      this.dialogImageUrl = file.url;
      //打开图片预览弹框
      this.dialogVisible = true;
    },
    //移除触发的钩子函数
    handleRemove(file, fileList) {
      console.log(file, "移除", fileList);
    },
    //文件发生变化触发的回调函数
    onChange(file, fileList) {
      console.log(file, "文件详情，change时候");
      //把文件详情赋值给图片地址
      this.imgUrl = file.raw;
    },
    //封装一个修改一级分类事件
    changeCate(n) {
      console.log(n, "nnnnn开关");
      //利用双向数据绑定，当你切换下拉框的时候我们应该可以取出当先的first_cateid的值
      //findIndex 数组操作方法！！！
      // console.log(this.goodsInfo.first_cateid, "一级分类的id");
      // console.log(this.cateList, "数组。。。");
      let index = this.cateList.findIndex(
        (item) => item.id == this.goodsInfo.first_cateid
      );
      this.secondCate = this.cateList[index].children;
      //通过对开关进行判断，去清空二级的双向数据绑定值
      if (!n) {
        this.goodsInfo.second_cateid = "";
      }
      // console.log(index, "indexindexindex");
    },
    //封装一个修改规格属性事件
    changeSpecs(n) {
      let index = this.specsList.findIndex(
        (item) => item.id == this.goodsInfo.specsid
      );
      this.specsArr = this.specsList[index].attrs;
      if (!n) {
        this.goodsInfo.specsattr = [];
      }
    },
    ...mapActions({
      getSpecsList: "specs/getSpecsListAction",
      getCateList: "cate/getCateListAction",
      getCount: "goods/getCountAction",
      getGoodsList: "goods/getGoodsListAction",
    }),
    //封装一个取消事件
    cancel() {
      //去改变父组件的isShow的状态
      this.$emit("cancel", false);
      //调取清空事件
      this.reset();
    },
    //封装一个清空事件
    reset() {
      this.goodsInfo = {
        first_cateid: "", //一级分类编号
        second_cateid: "", //二级分类编号
        goodsname: "", //商品名称
        price: "", //商品价格
        market_price: "", //市场价格
        img: "", //商品图片（文件）
        description: "", //商品描述
        specsid: "", //商品规格编号
        specsattr: "", //商品规格属性
        isnew: 1, //是否新品1是2不是
        ishot: 1, //是否热卖1是2不是
        status: 1, //状态1正常2禁用
      };
      //调用清空验证的方法
      this.$refs.goodsInfo.resetFields();
    },
    // 确定事件
    addGoods() {
      this.$refs.goodsInfo.validate((valid) => {
        if (valid) {
          /*
          针对于后端需求：对数据进行格式化
          specsattr 变成：'1,2,3'
          */
          this.goodsInfo.specsattr = this.goodsInfo.specsattr.join(",");
          this.goodsInfo.img = this.imgUrl;
          this.goodsInfo.description = this.editor.txt.html();
          // console.log(this.goodsInfo.description,'this.goodsInfo.description')
          // console.log(this.goodsInfo,'详情！！！')
          let file = new FormData();
          for (let i in this.goodsInfo) {
            file.append(i, this.goodsInfo[i]);
          }
          //验证成功之后调用添加接口
          getGoodsAdd(file).then((res) => {
            if (res.data.code == 200) {
              this.$message.success(res.data.msg);
              // //确定之后，调用关闭弹框并清空
              this.cancel();
              //重新调用接口
              this.getGoodsList();
              //重新调用总数
              this.getCount();
            } else {
              this.$message.error(res.data.msg);
            }
          });
        } else {
          this.$message.error("验证失败");
          return false;
        }
      });
    },
    //封装一个查询一条数据的接口
    lookup(id) {
      getGoodsInfo({ id }).then((res) => {
        if (res.data.code == 200) {
          console.log(res.data, "查找的数据");
          this.goodsInfo = res.data.list;
          //判断图片是否存在 实现图片的回显
          this.fileList = this.goodsInfo.img
            ? [{ url: this.$imgUrl + this.goodsInfo.img }]
            : [];
          //针对于规格属性进行转化
          this.goodsInfo.specsattr = this.goodsInfo.specsattr
            ? this.goodsInfo.specsattr.split(",")
            : [];
          //为编辑传送一个id值
          this.goodsInfo.id = id;
          //重新调用切换分类以及切换属性 目的是：数据的回显
          this.changeCate(true);
          this.changeSpecs(true);
        } else {
          this.$message.error(res.data.msg);
        }
      });
    },
    // 编辑事件
    editGoods() {
      this.$refs.goodsInfo.validate((valid) => {
        if (valid) {
          this.goodsInfo.specsattr = this.goodsInfo.specsattr.join(",");
          //如果修改的时候没有修改图片，你应该取值数据库的内容，否则就是这次新的图片
          this.goodsInfo.img = this.imgUrl ? this.imgUrl : this.goodsInfo.img;
          this.goodsInfo.description = this.editor.txt.html();
          let file = new FormData();
          for (let i in this.goodsInfo) {
            file.append(i, this.goodsInfo[i]);
          }
          //验证成功之后调用添加接口
          getGoodsEdit(file).then((res) => {
            if (res.data.code == 200) {
              this.$message.success(res.data.msg);
              // //确定之后，调用关闭弹框并清空
              this.cancel();
              //重新调用接口
              this.getGoodsList();
              //重新调用总数
              this.getCount();
            } else {
              this.$message.error(res.data.msg);
            }
          });
        } else {
          this.$message.error("验证失败");
          return false;
        }
      });
    },
  },
};

/*
分页
比如当前啊一共有5条数据
只要有分页，后端一定会两个参数
size  当前显示多少条 （前端定，根据产品需求）
page 页码

当前我让页面一个页面显示2条  所以page = 3
size page
2    1
2    2
2    3  这个时候数据库只有一条数据，那么他就把一条剩余的返回给你

*/
</script>

<style lang="" scoped></style>
